Erlotinib vs Nivolumab

## Erlotinib vs Nivolumab: Overview

This comparison examines the pharmacological differences between **Erlotinib** and **Nivolumab**.

## Mechanism of Action

**Erlotinib**: Reversible inhibitor of EGFR (HER1) tyrosine kinase, blocking autophosphorylation.

**Nivolumab**: Fully human anti-PD-1 IgG4 monoclonal antibody restoring T-cell anti-tumor activity.

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Nivolumab — 27 days.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Nivolumab — N/A.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Nivolumab — N/A.

**Type**: Erlotinib — Small molecule; Nivolumab — Antibody.